alleryIn proof by exhaustion, the conclusion is established by:
AAssuming it false
BChecking every case
CGiving one example
DUsing a short rule
Answer & Solution
Correct answer: B. Checking every case
1. The claim is divided into a finite number of cases.
2. Each case is proved separately, as in the 1,936-case four colour proof.
3. Assuming it false is proof by contradiction.
_Source: Wikipedia, "Mathematical_proof" (rev ?), section "Proof by exhaustion"_
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